我正在尝试制作一个在按下时会增长的 UIButton。目前我在按钮的按下事件中有以下代码(由蒂姆的回答提供):
#define button_grow_amount 1.2
CGRect currentFrame = button.frame;
CGRect newFrame = CGRectMake(currentFrame.origin.x - currentFrame.size.width / button_grow_amount,
currentFrame.origin.y - currentFrame.size.height / button_grow_amount,
currentFrame.size.width * button_grow_amount,
currentFrame.size.height * button_grow_amount);
button.frame = newFrame;
但是,当运行时,这会使我的按钮在每次按下时向上和向左移动。有任何想法吗?